Oil Pressure Indicator Inspection; Turn Signal Relay; Power Input Line Inspection - Honda GL1800 Service Manual

OIL PRESSURE INDICATOR
INSPECTION
Remove the left front exhaust pipe protector
(page 2-18).
Remove the rubber cap, and disconnect the oil pres-
sure switch wire by removing the terminal screw.
Indicator does not come on with the ignition switch
turned to "ON"
Ground the wire terminal to the engine with a
jumper wire.
Turn the ignition switch to "ON" and check the oil
pressure indicator.
The indicator should come on.
• If the indicator comes on, replace the oil pressure
switch.
• If the indicator does not come on, check for an
open circuit in the Blue/red wire between the oil
pressure switch and combination meter.
Indicator stays on while the engine is running
Check for continuity between the oil pressure switch
wire terminal and ground.
There should be no continuity.
• If there is continuity, check for short circuit in the
Blue/red wire between the oil pressure switch
and combination meter
• If there is no continuity, check the oil pressure
(page 4-6).
If the oil pressure is normal, replace the oil pres-
sure switch.

TURN SIGNAL RELAY

Remove the combination meter (page 20-17).

POWER INPUT LINE INSPECTION

Turn the ignition switch to "ON" or "ACC."
Measure the voltage between the Light green/black
wire terminal (+) of the combination meter 3P con-
nector and ground (–).
There should be battery voltage.
LIGHTS/METERS/SWITCHES
IL PRESSURE SWITCH WIRE
RUBBER CAP
TERMINAL SCREW
IL PRESSURE INDICAT R
ight green/black
COMBINATION METER 3P CONNECTOR
(viewed from the terminal side)
20-27